doc: Changelog for 0.19.5

Author: untitaker

CHANGES.md

@@ -20,6 +20,11 @@ sentry-sdk==0.10.1
 
 A major release `N` implies the previous release `N-1` will no longer receive updates. We generally do not backport bugfixes to older versions unless they are security relevant. However, feel free to ask for backports of specific commits on the bugtracker.
 
+## 0.19.5
+
+- Fix two regressions added in 0.19.2 with regard to sampling behavior when reading the sampling decision from headers.
+- Increase internal transport queue size and make it configurable.
+
 ## 0.19.4
 
 - Fix a bug that would make applications crash if an old version of `boto3` was installed.